Olympus E-520 vs Panasonic GH3

Let's examine more closely at the Olympus E-520 and Panasonic GH3, one being a Entry-Level DSLR and the latter is a Advanced Mirrorless by competitors Olympus and Panasonic. There exists a significant gap between the sensor resolutions of the E-520 (10MP) and GH3 (16MP) but they feature the same exact sensor dimensions (Four Thirds).

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The E-520 was revealed 5 years earlier than the GH3 and that is quite a sizable gap as far as technology is concerned. Both of these cameras offer different body type with the Olympus E-520 being a Compact SLR camera and the Panasonic GH3 being a SLR-style mirrorless camera.

Before delving through a complete comparison, below is a concise overview of how the E-520 grades vs the GH3 with regard to portability, imaging, features and an overall grade.

Here is a preview of the gallery images for Olympus E-520 and Panasonic Lumix DMC-GH3. The full galleries are viewable at Olympus E-520 Gallery and Panasonic GH3 Gallery.

If you're going to lug around your camera regularly, you'll have to factor its weight and volume. The Olympus E-520 enjoys physical dimensions of 136mm x 92mm x 68mm (5.4" x 3.6" x 2.7") and a weight of 552 grams (1.22 lbs) while the Panasonic GH3 has sizing of 133mm x 93mm x 82mm (5.2" x 3.7" x 3.2") accompanied by a weight of 550 grams (1.21 lbs).

Contrast the Olympus E-520 and Panasonic GH3 in the latest Camera and Lens Size Comparison Tool.

Do not forget, the weight of an Interchangeable Lens Camera will differ based on the lens you have attached at the time. The following is the front view over all size comparison of the E-520 versus the GH3.

Looking at dimensions and weight, the portability grade of the E-520 and GH3 is 68 and 66 respectively.

Normally, it can be tough to envision the gap between sensor measurements purely by going over technical specs. The visual underneath may give you a more clear sense of the sensor dimensions in the E-520 and GH3.

As you have seen, each of these cameras offer the same exact sensor sizing albeit not the same MP. You should expect the Panasonic GH3 to offer greater detail because of its extra 6MP. Higher resolution can also allow you to crop photographs a little more aggressively. The older E-520 is going to be disadvantaged in sensor innovation.